// Ryzom - MMORPG Framework <http://dev.ryzom.com/projects/ryzom/>
// Copyright (C) 2010  Winch Gate Property Limited
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as
// published by the Free Software Foundation, either version 3 of the
// License, or (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with this program.  If not, see <http://www.gnu.org/licenses/>.

#include "stdpch.h"
#include "custom_matrix.h"



// *********************************************************
bool CCustomMatrix::set(bool newOn, const NLMISC::CMatrix &newMat)
{
	if (newOn)
	{
		if (On)
		{
			float srcMatUnpacked[16];
			float destMatUnpacked[16];
			Matrix.get(srcMatUnpacked);
			newMat.get(destMatUnpacked);
			if (std::equal(srcMatUnpacked, srcMatUnpacked + 16, destMatUnpacked)) return false;
		}
		On = newOn;
		Matrix = newMat;
		return true;
	}

	Matrix = newMat;
	if (newOn != On)
	{
		On = newOn;
		return true;
	}

	return false;
}